Verizon launches service to block, filter robocalls

(CNN) — Verizon has released a new tool aimed at filtering robocalls. 

The free service will display a scam alert on a smartphone’s screen to notify customers the call is likely coming from a fraudulent source. 

Some calls will be blocked and not received by your phone at all.

Verizon officials say more than 300 million spam and robocall numbers have been collected so far, but robocall services often use fake numbers so the list is constantly growing.

Landline phones will also have access to the protection service through caller ID.